Class 8 Coal and Petroleum MCQs and fill in the blanks– Here, we will share Class 8 Coal and Petroleum MCQs and fill in the blanks type questions and answers. If you are searching for Class 8 Coal and Petroleum MCQs and fill in the blanks, you are at the right place. queryexpress provides the most important class 8 science chapter 5 Coal and Petroleum MCQs and fill in the blanks for you.
Class 8 Coal and Petroleum MCQs and fill in the blanks
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- Materials found in nature are called __________.
Answer: natural resources
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- Resources that are present in unlimited quantity and cannot be exhausted by human activities are called __________ natural resources.
Answer: inexhaustible,
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- Resources that are present in limited quantity and can be exhausted by human activities are called __________ natural resources.
- Examples of exhaustible natural resources include coal, __________, and natural gas.
Answer: exhaustible, petroleum
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- Fossil fuels are formed from the remains of __________ buried under the earth millions of years ago.
- Coal, petroleum, and natural gas are examples of __________.
Answer: living organisms, fossil fuels
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- Coal is a hard, black combustible mineral that consists mainly of __________.
- In India, coal is found mainly in Bihar, West Bengal, __________, and Madhya Pradesh.
Answer: carbon, Orissa
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- The slow process by which dead plants buried deep under the earth have become coal is called __________.
- Coal is used as a fuel in homes and __________.
Answer: carbonisation, industry
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- The products obtained by heating coal in the absence of air include coal gas, coal tar, and __________.
- The strong heating of coal in the absence of air is called __________ of coal.
Answer: coke, destructive distillation
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- Coal gas is mainly a mixture of methane and hydrogen, with some __________.
- Coal tar is a thick, black liquid obtained by heating coal in the absence of air and contains about __________ carbon compounds.
Answer: carbon monoxide, 200
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- Coke is a tough and porous black solid substance that is 98 per cent __________.
- Coke is used as a _______in the extraction of metals.
Answer: carbon, reducing agent
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- The real source of energy of coal is the __________ energy.
- The compounds obtained from coal tar are used to make synthetic fibres, drugs, plastics, __________, and perfumes.
Answer: solar, synthetic dyes
Coal and Petroleum MCQ Class 8 Chapter 5 NCERT
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- Natural fuels formed from the remains of living organisms are called __________.
- Coal, petroleum, and natural gas were formed by the decomposition of __________ buried under the earth.
Answer: fossil fuels, fossils
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- Fossils are the remains of pre-historic __________ or animals.
- Coal is found in deep coal __________ under the surface of the earth.
Answer: plants, mines
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- The process by which dead plants and trees were converted into coal involved high pressure, high temperature, and the absence of __________.
- Coal is mainly used as a source of __________ energy.
Answer: air, heat
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- Coal gas was used for street lighting for the first time in __________ in the year 1810.
- These days, coal gas is used more as a source of __________ rather than light.
Answer: London, heat
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- Coal tar has been traditionally used for metalling the __________.
- Coke is mainly used as a _____ in the extraction of metals
Answer: roads, reducing agent
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- Coal gas is obtained by the strong heating of coal in the absence of __________ during the processing of coal to get __________.
- Coal gas is a mixture of __________ and hydrogen.
Answer: air, coke, methane
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- Naphthalene balls, used to repel moths and other insects, are obtained from __________.
- The products obtained from coal tar are separated by the process of __________ distillation.
Answer: coal tar, fractional
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- _____ is an almost pure form of carbon.
- Coke burns without producing any __________ whereas coal produces a lot of it on burning.
Answer: Coke, smoke
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- The natural processes like __________, volcanoes, and floods helped bury forests under the surface of the earth millions of years ago.
- The temperature __________ as the buried remains sank deeper and deeper into the earth.
Answer: earthquakes, rose
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- The real source of energy in coal is the __________ energy absorbed by plants during __________.
- Coal tar is used to make __________ materials for roads.
Answer: solar, photosynthesis, roofing
Coal and petroleum class 8 chapter 5 MCQs and fill in the blanks
- _______ is used for making candles, vaseline, ointments, wax paper, and grease.
Answer: Paraffin wax
- _______ is used for road surfacing.
Answer: Bitumen
- Petroleum is not a single chemical compound; it is a complex mixture of compounds known as ________.
Answer: hydrocarbons
- Hydrocarbons are compounds made up of only two elements: ________ and ________.
Answer: carbon, hydrogen
- Petroleum is insoluble in ________ and is a natural resource obtained from deep ________
Answer: water, oil wells
- Just like coal, petroleum is also a ________ fuel, and it is also called ‘________ oil’ or ‘________ oil’.
Answer: fossil, crude, mineral
- Petroleum was formed by the decomposition of the remains of tiny ________ and ________ buried under the sea millions of years ago.
Answer: plants, animals
- Petroleum is extracted by drilling holes (called ________)
Answer: oil wells
- The world’s first oil well was drilled in ________ (USA) in 1859.
Answer: Pennsylvania
- In India, petroleum (oil) is found in Assam, Gujarat, Mumbai High (off-shore area), and near the basins of ________ and ________ rivers.
Answer: Godavari, Krishna
Coal and Petroleum class 8 quiz with Answers
- The crude petroleum oil has to be ________ before it can be used for specific purposes.
Answer: refined
- The process of separating crude petroleum oil into more useful fractions is called ________.
Answer: refining
- The refining of petroleum is carried out in an oil ________, where crude petroleum oil is separated into different useful fractions by the process of ________ ________.
Answer: refinery, fractional distillation
- _______does not leave behind any solid residue on burning.
Answer: LPG
- LPG has a low calorific value (T/F)
Answer: False
- Petrol is used as a fuel in light motor vehicles and also as a solvent for ________.
Answer: dry cleaning
- _______ is used as aviation fuel in jet aeroplanes.
Answer: Kerosene
- Diesel is used for ________ in agriculture and in electric ________ to produce electricity on a small scale.
Answer: irrigation, generators
- Lubricating oil is used for lubrication in ________ and ________.
Answer: machines, engines
- Paraffin wax is used for making ________, vaseline, ointments, wax paper, and grease.
Answer: candles
Coal and petroleum Class 8 Fill in the blanks
- Bitumen is used for road surfacing and for ________ the roofs of buildings.
Answer: waterproofing
- The gas used for domestic cooking is called ________
Answer: Liquefied Petroleum Gas
- ______ does not produce any poisonous gases on burning.
Answer: LPG
- The heat produced by the burning of LPG is used for ________ ________.
Answer: cooking food
- One of the advantages of LPG is that it burns ________ and has a high ________ ________.
Answer: easily, calorific value
- LPG burns with a ________ flame and does not cause ________ pollution.
Answer: smokeless, air
- LPG does not produce any ________ gases on burning.
Answer: poisonous
- LPG does not leave behind any ________ residue on burning.
Answer: solid
- The crude petroleum oil extracted from oil wells is taken to the ‘oil refinery’ through ________.
Answer: pipes
- The refining of petroleum into different fractions is done by ______.
Answer: fractional distillation
Coal and petroleum Class 8 one-word Questions
- Petroleum gas is mainly used as a fuel in ________ and ________.
Answer: homes, industry
- Petrol is primarily used as a fuel in ________ motor vehicles such as cars, motorcycles, and scooters.
Answer: light
- A special grade of kerosene oil is used as ________ fuel in jet aeroplanes.
Answer: aviation
- Diesel is used to run ________ sets for irrigation in agriculture.
Answer: pump
- Diesel is also used in ________ generators to produce electricity on a small scale.
Answer: Electric
- The refining of petroleum provides lubricating oil, which is used in ________ and engines.
Answer: machines
- ________ is used for lubrication in machines and engines (like car engines).
Answer: Lubricating oil
- Bitumen, a fraction of petroleum, is used for ________ surfacing.
Answer: road
- Bitumen is also used in making black ________.
Answer: paints
- Petroleum is found trapped between two layers of ________ rocks.
Answer: impervious
- Natural gas occurs above the ________ oil trapped under the rocks.
Answer: petroleum
42. The refining of petroleum is carried out in an _______
Answer- oil refinery
Coal and Petroleum class 8 MCQs and fill in the blanks
Natural gas mainly consists of __________ with small quantities of __________ and __________.
- Answer: methane; ethane; propane
· Natural gas is formed by the decomposition of __________ lying under water, carried out by __________ in the absence of air.
- Answer: vegetable matter; anaerobic bacteria
· Compressed natural gas (CNG) is natural gas compressed by applying __________.
- Answer: pressure
· Natural gas is considered a clean fuel because it burns without producing __________ and does not cause __________.
- Answer: smoke; air pollution
· Natural gas is stored under high pressure as __________ for easier storage, transport, and use.
- Answer: Compressed Natural Gas (CNG)
· Natural gas can be used directly for heating purposes in homes and industries without the need to add __________.
- Answer: anything else
· Natural gas is supplied to homes and factories through a network of __________.
- Answer: underground pipes
· CNG is increasingly used as a fuel in transport vehicles to reduce __________ in cities.
- Answer: air pollution
· Natural gas is a starting material for the manufacture of a number of chemicals known as __________.
- Answer: petrochemicals
· The known reserves of natural gas in India are found in states like Tripura, Rajasthan, Maharashtra, and in the __________ delta.
- Answer: Krishna-Godavari
Coal and Petroleum Class 8 MCQ Online Test
· Natural gas consists mainly of __________ with small quantities of __________ and __________.
- Answer: methane; ethane; propane
· Natural gas occurs deep under the crust of the earth either alone or along with __________.
- Answer: oil
· Natural gas is formed under the earth by the decomposition of __________ matter in the absence of air.
- Answer: vegetable
· Natural gas is also known as __________ gas when stored under high pressure.
- Answer: Compressed Natural Gas (CNG)
· Natural gas burns with a __________ flame and does not produce __________ on burning.
- Answer: smokeless; smoke
· Natural gas does not leave behind any __________ residue on burning.
- Answer: solid
· __________ is a major advantage of natural gas because it can be supplied through a network of underground pipes.
- Answer: Convenience
· Compressed Natural Gas (CNG) is increasingly used as a fuel in __________ vehicles.
- Answer: Transport
· Natural gas is used as a source of __________ gas needed to manufacture fertilisers.
- Answer: hydrogen
· Natural gas is a starting material for the manufacture of a wide range of chemicals known as __________.
- Answer: petrochemicals
· Natural gas reserves have been found in __________ delta in India.
- Answer: Krishna-Godavari
· The process of separating crude petroleum oil into more useful fractions is called __________.
- Answer: refining
· One of the uses of natural gas is as a fuel in __________ power stations for generating electricity.
- Answer: Thermal
· __________ is used as a domestic and industrial fuel.
- Answer: Natural gas
· Natural gas does not cause __________ gases on burning, making it a cleaner fuel.
- Answer: poisonous
· __________ gas obtained from natural gas is used in the manufacture of fertilisers.
- Answer: Hydrogen
· Natural gas burns with a __________ flame and is considered a clean fuel.
- Answer: smokeless
· __________, __________, and __________ are fractions obtained from the refining of petroleum.
- Answer: Petrol; Diesel; Kerosene
· The network of pipelines for the supply of natural gas exists in cities like _______and parts of __________.
- Answer: · Vadodra, Delhi
_______ obtained from petroleum and natural gas are used in the manufacture of __________, synthetic fibres, plastics, drugs, and dyes.
- Answer: · Petrochemicals, detergents
· Natural gas is considered a clean fuel because it does not produce __________ on burning.
- Answer: Smoke
· Natural gas is obtained from deep __________ wells dug in certain areas of the earth.
- Answer: oil
· The formation of natural gas is a result of the decomposition of __________ matter by anaerobic bacteria.
- Answer: vegetable
· One of the advantages of natural gas is its ability to be used directly for heating purposes in homes and __________.
- Answer: industry
· __________, __________, and __________ are examples of petrochemicals obtained from petroleum and natural gas.
- Answer: Benzene; Ethylene; Toluene
· The known reserves of natural gas in India are found in states like Tripura, __________, Maharashtra, and the Krishna-Godavari delta.
- Answer: Rajasthan
· __________ gas is used in vehicles as an alternative to petrol and diesel to reduce air pollution in cities.
- Answer: Compressed Natural Gas (CNG)
· Natural gas is stored and transported under high pressure to form ______
- Answer: Compressed Natural Gas (CNG).
· Natural gas is considered a __________ fuel because it does not produce smoke or solid residue on burning.
- Answer: clean